Well max Lumi from GW, and QGJ from Cantina. Kit Fisto isnt farmable so if its Yoda you're after i'd farm Ahsoka after QGJ (Shes one of my hardest hitting toons and shes currently a 6* lvl 70, only outshined by 86 and Rey.) Barriss will help you out tremendously in GW so there's a Cantina node farm. Skip Koth, Windu is alright and id do him over JC.
You'll most likely be able to 7* a shipment and node toon at the same time, so Windu/QGJ then switch to Barriss/Ahsoka. I alternated mine just to stay well rounded but you can advance in what manner pleases you.